Relative International Energy Conservation Code (IECC) Energy Impacts by Compliance Path

Primary Author(s)

Florida Solar Energy Center
Philip W. Fairey, Florida Solar Energy CenterFollow

Secondary Author(s)

Vieira, Robin

Report Number

FSEC-CR-2108-21

URL

http://publications.energyresearch.ucf.edu/wp-content/uploads/2021/03/FSEC-CR-2108-21.pdf

Keywords

Building Codes; EnergyGauge® USA; IECC Compliance; Energy Rating Index; HERS Index; Building Energy Simulation

Abstract

The EnergyGauge® USA (v.6.2) residential building energy simulation software tool is used to examine energy impacts in two-story, 2,376 ft², single-family homes configured in accordance with the minimum requirements of Section R402-R404 of the 2018 IECC in fourteen representative U.S. cities.⁴ EnergyGauge USA is a RESNET-accredited HERS software tool capable of evaluating not only the HERS Index and the IECC Section R406 Energy Rating Index Compliance Alternative but also the IECC Section R405 Simulated Performance Alternative as well as the IECC Section R402 R-Value and Total UA Alternative prescriptive methods along with all of the IECC mandatory minimum requirements of all of these compliance methods.

Simulations for each home prototype are conducted using three foundation types: Slab-on-grade (SOG), crawlspace and basement. For each prototype and foundation type, each of the IECC compliance methods are evaluated on the basis of pass/fail and on the basis of performance comparison. For example, where the code evaluation is via the Total UA Alternative, the IECC baseline Total UA value is compared against the prototype Total UA value to determine the compliance ratio between the prototype and the IECC baseline. Similar comparison is conducted for the R405 Simulated Performance Alternative. Additionally, the R406 Energy Rating Index Compliance Alternative (ERI) is compared against the HERS Index for each prototype and each foundation configuration.

Date Published

3-4-2021

Identifiers

16

Subjects

Energy conservation; Building laws; Energy consumption--Measurement; Dwellings--Energy consumption--Standards; Energy consumption--Simulation methods

Local Subjects

Buildings - Building Codes

Type

Text; Document

Creator (Linked Data)

Fairey, Philip W. [LC]

Collection

FSEC Energy Research Center® Collection

STARS Citation

Florida Solar Energy Center and Fairey, Philip W., "Relative International Energy Conservation Code (IECC) Energy Impacts by Compliance Path" (2021). FSEC Energy Research Center®. 16.
https://stars.library.ucf.edu/fsec/16